CN113279453B - Intelligent variable-frequency constant-pressure water supply equipment - Google Patents
Intelligent variable-frequency constant-pressure water supply equipment Download PDFInfo
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- CN113279453B CN113279453B CN202110504846.9A CN202110504846A CN113279453B CN 113279453 B CN113279453 B CN 113279453B CN 202110504846 A CN202110504846 A CN 202110504846A CN 113279453 B CN113279453 B CN 113279453B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 268
- 238000006243 chemical reaction Methods 0.000 claims abstract description 16
- 238000007789 sealing Methods 0.000 claims description 38
- 206010063659 Aversion Diseases 0.000 abstract 1
- 238000007667 floating Methods 0.000 description 4
- 239000008400 supply water Substances 0.000 description 3
- 230000005484 gravity Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B7/00—Water main or service pipe systems
- E03B7/07—Arrangement of devices, e.g. filters, flow controls, measuring devices, siphons or valves, in the pipe systems
- E03B7/075—Arrangement of devices for control of pressure or flow rate
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B7/00—Water main or service pipe systems
- E03B7/07—Arrangement of devices, e.g. filters, flow controls, measuring devices, siphons or valves, in the pipe systems
- E03B7/078—Combined units with different devices; Arrangement of different devices with respect to each other
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B7/00—Water main or service pipe systems
- E03B7/07—Arrangement of devices, e.g. filters, flow controls, measuring devices, siphons or valves, in the pipe systems
- E03B7/08—Arrangement of draining devices, e.g. manual shut-off valves
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B7/00—Water main or service pipe systems
- E03B7/09—Component parts or accessories
- E03B7/095—Component holders or housings, e.g. boundary boxes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Reciprocating Pumps (AREA)
- Control Of Fluid Pressure (AREA)
Abstract
The invention discloses intelligent variable-frequency constant-pressure water supply equipment which comprises a pressure water supply tank, a variable-frequency water tank and a constant-pressure water tank, wherein the pressure water supply tank is connected with the variable-frequency water tank through a communicating pipe, the top of the variable-frequency water tank is respectively provided with a small water supply pump a and a large water supply pump b from left to right, the small water supply pump a is connected with two water guide pipes a, and one water guide pipe a is communicated with the variable-frequency water tank. This intelligence frequency conversion constant voltage water supply equipment, when water in the constant voltage water tank constantly rises, sealed buoyancy board floats on the surface of water, under its buoyancy, sealed buoyancy board shifts up thereupon, make sealed buoyancy board promote the telescopic link, the telescopic link expandes, the slider slides on the slide bar, the aversion piece slides on the guide post, when sealed buoyancy board removes to the outlet pipe top, the outlet pipe is in the open mode this moment, water in the constant voltage water tank carries out the pump sending through the outlet pipe, thereby guarantee the state that is in the constant voltage water tank, with the stability of supplying water that improves water supply equipment.
Description
Technical Field
The invention relates to the technical field of water supply equipment, in particular to intelligent variable-frequency constant-pressure water supply equipment.
Background
A water supply device: the water supply device which can automatically start and stop and output a certain flow and lift in unit time. According to the application: fire control, life, production, sewage treatment four kinds, in recent years, along with the rapid development of economy, high-rise mansions in various places are standing in front of people like spring bamboo shoots after the rain. However, since the pressure of municipal pipe network can only reach about 0.2MPa, the water pressure and quality of water used by high-rise users are troubling designers of water supply companies, and water supply equipment is applied along with the development of technology.
The existing water supply equipment has a plurality of types, but most of the existing water supply equipment is only changed in style, the water supply equipment is not improved in function, when the equipment is used, the frequency of a water supply device cannot be adjusted, a power supply is wasted, and the water pressure cannot be well stabilized due to the fact that the water consumption of a high-rise building is changed constantly. Therefore, an intelligent variable-frequency constant-pressure water supply device needs to be designed so as to solve the problems provided in the above.
Disclosure of Invention
The invention aims to provide intelligent variable-frequency constant-pressure water supply equipment to solve the problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides an intelligence frequency conversion constant voltage water supply equipment, includes pressure feed water tank, frequency conversion water tank and constant voltage water tank, be connected through communicating pipe between pressure feed water tank and the frequency conversion water tank, little feed water pump a and big feed water pump b are installed respectively from a left side to the right side in the top of frequency conversion water tank, be connected with two aqueducts a on the little feed water pump a, one of them aqueduct a and frequency conversion water tank intercommunication, another aqueduct a and constant voltage water tank intercommunication, be connected with two aqueducts b on the big feed water pump b, one of them aqueduct b and frequency conversion water tank intercommunication, another aqueduct b and constant voltage water tank intercommunication, little the big feed water pump b of power ratio of little feed water pump a, and the diameter of aqueduct a's diameter aqueduct b is little, the right side intercommunication of constant voltage water tank has the outlet pipe, and the inside pressure hoisting device that is equipped with the control outlet pipe closed that is equipped with of constant voltage water tank, and the left side of the pressure water supply tank is communicated with a water inlet pipe.
Preferably, the pressure lifting device comprises a sliding rod, two sliding blocks, a telescopic rod, a positioning pin, a sealing buoyancy plate, a guide post and a moving block, the sliding rod is fixedly connected to the inner wall of the constant-pressure water tank, the number of the sliding blocks is two, the two sliding blocks are symmetrically and slidably mounted on the sliding rod, the telescopic rod is two connecting rods which are arranged in a crossed mode and movably mounted through the positioning pin, one end of the telescopic rod is hinged to the sliding blocks, the other end of the telescopic rod is hinged to the moving block, the sealing buoyancy plate is slidably mounted in the constant-pressure water tank in a sealing mode, a groove is formed in the top of the sealing buoyancy plate, the guide post is fixedly connected to the inner wall of the groove, the moving block is slidably mounted on the guide post, and the sealing buoyancy plate is located below the water outlet pipe.
Preferably, the center of the top of the sealing buoyancy plate is fixedly connected with a pressure spring, the other end of the pressure spring is fixedly connected to the sliding rod, and the pressure spring is not in contact with the telescopic rod.
Preferably, a first control valve is installed at the joint of the water guide pipe a and the variable frequency water tank, a second control valve is installed at the joint of the water guide pipe b and the variable frequency water tank, a valve controller is installed on the variable frequency water tank, and the valve controller, the first control valve and the second control valve are electrically connected.
Preferably, the constant pressure water tank is provided with a main controller, and the main controller comprises a water pressure detector and a display screen.
Preferably, a water pressure control device is detachably mounted at the connection position of the communicating pipe and the pressure water supply tank.
Preferably, it has threaded joint to inlay in the water pressure control utensil, and threaded joint and communicating pipe screw thread link to each other, the holding ring is installed to threaded joint's inner wall, one side fixedly connected with reset spring that pressure feed water tank was kept away from to the holding ring, and reset spring's the sealed chock plug of other end fixedly connected with, sealed slidable mounting of chock plug is in threaded joint.
Preferably, the diameter of the threaded joint is smaller than that of the communicating pipe.
Compared with the prior art, the invention has the beneficial effects that:
(1) this intelligence frequency conversion constant voltage water supply equipment, supply water in to the pressure feed tank through the oral siphon, when water in the pressure feed tank reaches a certain capacity, under its hydraulic effect, sealed chock plug pressurized moves and breaks away from threaded joint, reset spring is tensile this moment, make threaded joint and communicating pipe intercommunication, thereby make water in the pressure feed tank stably get into in the frequency conversion water tank, if the water pressure in the pressure feed tank is not enough, its reset spring resets and stimulates sealed chock plug shutoff threaded joint, with the moisture in the guarantee pressure feed tank certain, avoid appearing the unexpected circumstances of lacking of water source, open and close communicating pipe according to the outside automation of supplying water condition, make it use more intelligent.
(2) This intelligence frequency conversion constant voltage water supply equipment, water gets into in the frequency conversion water tank, if appear supplying water when not enough, the first control valve of valve accuse ware control this moment is opened, little water supply pump an starts, make little water supply pump a supply water through aqueduct a, keep water supply equipment's stable water supply, when the same reason water supply capacity is great, valve accuse ware control second control valve is opened, make big water supply pump b supply water through aqueduct b and handle, avoid appearing high-power a small amount of water that provides, energy-concerving and environment-protective.
(3) In the intelligent variable-frequency constant-pressure water supply equipment, water is pumped into the constant-pressure water tank through the variable-frequency water tank, when the water in the constant pressure water tank continuously rises, the sealing buoyancy plate floats on the water surface, and under the action of the buoyancy, the sealing buoyancy plate moves upwards along with the water, so that the sealing buoyancy plate pushes the telescopic rod to expand, the slide block slides on the slide rod, the shift block slides on the guide column, the pressure spring is compressed, when the sealing buoyancy plate moves to the upper part of the water outlet pipe, the water outlet pipe is in an open state, water in the constant pressure water tank is pumped through the water outlet pipe, if the water in the constant pressure water tank is insufficient, the water quantity is reduced, the sealing floating plate moves downwards under the action of the gravity of the sealing floating plate and the elastic force of the pressure spring, so that the sealing floating plate isolates the water outlet pipe from the water supply inner cavity of the constant pressure water tank, thereby ensuring that the constant pressure water tank is in a constant pressure state to improve the water supply stability of the water supply equipment.
Drawings
FIG. 1 is a cross-sectional view of the structure of the present invention;
FIG. 2 is a structural sectional view of the constant pressure water tank of the present invention;
FIG. 3 is a structural cross-sectional view of another embodiment of the constant pressure tank of the present invention;
FIG. 4 is a sectional view of the structure of the structural hydraulic control tool of the present invention;
FIG. 5 is a perspective view of the connection structure of the positioning ring and the sealing plug according to the present invention;
fig. 6 is a cross-sectional view of another embodiment of the structural hydraulic controller of the present invention.
In the figure: 1. a pressure water supply tank; 101. a water inlet pipe; 2. a variable frequency water tank; 3. a constant pressure water tank; 301. a water outlet pipe; 4. a small water supply pump a; 5. a water conduit a; 6. a large water supply pump b; 7. a water conduit b; 8. a first control valve; 9. a second control valve; 10. a communicating pipe; 11. a pressure raising device; 110. a slide bar; 111. a slider; 112. a telescopic rod; 113. positioning pins; 114. sealing the buoyancy plate; 115. a guide post; 116. a shift block; 117. a pressure spring; 12. a valve controller; 13. a master controller; 14. a water pressure control device; 15. a threaded joint; 16. a positioning ring; 17. a return spring; 18. and sealing the plug head.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-6, the present invention provides a technical solution: an intelligent variable-frequency constant-pressure water supply device comprises a pressure water supply tank 1, a variable-frequency water tank 2 and a constant-pressure water tank 3, wherein the pressure water supply tank 1 is connected with the variable-frequency water tank 2 through a communicating pipe 10, the top of the variable-frequency water tank 2 is respectively provided with a small water supply pump a4 and a large water supply pump b6 from left to right, the small water supply pump a4 is connected with two water guide pipes a5, one water guide pipe a5 is communicated with the variable-frequency water tank 2, the other water guide pipe a5 is communicated with the constant-pressure water tank 3, the large water supply pump b6 is connected with two water guide pipes b7, one water guide pipe b7 is communicated with the variable-frequency water tank 2, the other water guide pipe b7 is communicated with the constant-pressure water tank 3, the power of the small water supply pump a4 is smaller than that of the large water supply pump b6, the diameter of the water guide pipe b7 of the water guide pipe a5 is smaller than that of the constant-pressure water tank 3, the right side of the constant-pressure water tank 3 is communicated with a water outlet pipe 301, and a pressure lifting device 11 for controlling the closing of the water outlet pipe 301 is arranged in the constant-pressure water tank 3, a water inlet pipe 101 is connected to the left side of the pressure feed water tank 1.
The pressure lifting device 11 comprises a sliding rod 110, two sliding blocks 111, an expansion link 112, a positioning pin 113, a sealing buoyancy plate 114, a guide post 115 and a moving block 116, wherein the sliding rod 110 is fixedly connected to the inner wall of the constant pressure water tank 3, the number of the sliding blocks 111 is two, the two sliding blocks 111 are symmetrically and slidably mounted on the sliding rod 110, the expansion link 112 is formed by two connecting rods in a crossed manner and movably mounted through the positioning pin 113, one end of the expansion link 112 is hinged to the sliding block 111, the other end of the expansion link 112 is hinged to the moving block 116, the sealing buoyancy plate 114 is slidably mounted in the constant pressure water tank 3 in a sealing manner, a groove is formed in the top of the sealing buoyancy plate 114, the guide post 115 is fixedly connected to the inner wall of the groove, the moving block 116 is slidably mounted on the guide post 115, and the sealing buoyancy plate 114 is located below the water outlet pipe 301.
A pressure spring 117 is fixedly connected to the center of the top of the sealing floating plate 114, the other end of the pressure spring 117 is fixedly connected to the sliding rod 110, and the pressure spring 117 is not in contact with the telescopic rod 112.
A first control valve 8 is arranged at the joint of the water guide pipe a5 and the variable frequency water tank 2, a second control valve 9 is arranged at the joint of the water guide pipe b7 and the variable frequency water tank 2, a valve controller 12 is arranged on the variable frequency water tank 2, and the valve controller 12, the first control valve 8 and the second control valve 9 are electrically connected.
The constant pressure water tank 3 is provided with a main controller 13, and the main controller 13 comprises a water pressure detector and a display screen.
A water pressure control tool 14 is detachably attached to the connection between the connection pipe 10 and the pressure water supply tank 1.
Threaded joint 15 is embedded in hydraulic control utensil 14, and threaded joint 15 and communicating pipe 10 thread connection, and holding ring 16 is installed to threaded joint 15's inner wall, and holding ring 16 keeps away from one side fixedly connected with reset spring 17 of pressure feed water tank 1, and reset spring 17's the other end fixedly connected with sealing plug 18, and sealing plug 18 seals sliding mounting in threaded joint 15.
The threaded joint 15 has a smaller diameter than the diameter of the communication pipe 10.
The working principle is as follows: the water is supplied to the pressure water supply tank 1 through the water inlet pipe 101, when the water in the pressure water supply tank 1 reaches a certain volume, the sealing plug 18 is pressed to move rightwards and is separated from the threaded connector 15 under the action of the water pressure of the water, at the moment, the reset spring 17 is stretched, so that the threaded connector 15 is communicated with the communicating pipe 10, the water in the pressure water supply tank 1 stably enters the variable frequency water tank 2, if the water pressure in the pressure water supply tank 1 is insufficient, the reset spring 17 resets and pulls the sealing plug 18 to plug the threaded connector 15, the water in the pressure water supply tank 1 is guaranteed to be certain, the accidental water source fracture is avoided, the communicating pipe is automatically opened and closed according to the external water supply condition, and the use of the communicating pipe is more intelligent;
when water enters the variable frequency water tank 2 and is insufficient, the valve controller 12 controls the first control valve 8 to be opened, the small water supply pump a4 is started, so that the small water supply pump a4 supplies water through the water guide pipe a5, stable water supply of water supply equipment is kept, and similarly, when the water supply amount is large, the valve controller 12 controls the second control valve 9 to be opened, so that the large water supply pump b6 supplies water through the water guide pipe b7, the phenomenon that large power supplies a small amount of water is avoided, and the energy conservation and environmental protection are realized;
water is pumped into the constant pressure water tank 3 through the variable frequency water tank 2, when the water in the constant pressure water tank 3 continuously rises, the sealing buoyancy plate 114 floats on the water surface, under the action of buoyancy, the sealing buoyancy plate 114 moves upwards along with the sealing buoyancy plate 114, so that the sealing buoyancy plate 114 pushes the telescopic rod 112, the telescopic rod 112 is unfolded, the sliding block 111 slides on the sliding rod 110, the shifting block 116 slides on the guide post 115, the pressure spring 117 is compressed, when the sealing buoyancy plate 114 moves to the position above the water outlet pipe 301, the water outlet pipe 301 is in an open state at the moment, the water in the constant pressure water tank 3 is pumped through the water outlet pipe 301, if the water in the constant pressure water tank 3 is insufficient, the water quantity is reduced, the sealing buoyancy plate 114 moves downwards under the action of gravity of the sealing buoyancy plate 114 and the elastic force of the pressure spring 117, so that the water outlet pipe 301 is isolated from the water supply cavity of the constant pressure water tank 3, and the constant pressure water tank 3 is in a constant pressure state is ensured, to improve the water supply stability of the water supply apparatus.
Those not described in detail in this specification are well within the skill of the art.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (6)
1. The utility model provides an intelligence frequency conversion constant voltage water supply equipment, includes pressure feed water tank (1), frequency conversion water tank (2) and constant voltage water tank (3), its characterized in that: the pressure water supply tank (1) is connected with the variable frequency water tank (2) through a communicating pipe (10), a small water supply pump a (4) and a large water supply pump b (6) are respectively installed at the top of the variable frequency water tank (2) from left to right, two water guide pipes a (5) are connected onto the small water supply pump a (4), one water guide pipe a (5) is communicated with the variable frequency water tank (2), the other water guide pipe a (5) is communicated with the constant pressure water tank (3), two water guide pipes b (7) are connected onto the large water supply pump b (6), one water guide pipe b (7) is communicated with the variable frequency water tank (2), the other water guide pipe b (7) is communicated with the constant pressure water tank (3), the power of the small water supply pump a (4) is smaller than that of the large water supply pump b (6), the diameter of the water guide pipe b (7) of the water guide pipe a (5) is smaller than that of the constant pressure water tank (3), and the water outlet pipe (301) is communicated with the right side of the constant pressure water tank (3), and a pressure lifting device (11) for controlling the closing of the water outlet pipe (301) is arranged in the constant pressure water tank (3), the left side of the pressure water supply tank (1) is communicated with a water inlet pipe (101), the pressure lifting device (11) comprises a sliding rod (110), two sliding blocks (111), two telescopic rods (112), a positioning pin (113), a sealing buoyancy plate (114), a guide post (115) and a moving block (116), the sliding rod (110) is fixedly connected to the inner wall of the constant pressure water tank (3), the two sliding blocks (111) are symmetrically and slidably mounted on the sliding rod (110), the telescopic rods (112) are two connecting rods which are crossed and movably mounted through the positioning pin (113), one end of the telescopic rod (112) is hinged with the sliding block (111), the other end of the telescopic rod (112) is hinged with the moving block (116), the sealing buoyancy plate (114) is hermetically and slidably mounted in the water tank (3), the top of the sealing buoyancy plate (114) is provided with a groove, the guide column (115) is fixedly connected to the inner wall of the groove, the moving block (116) is slidably mounted on the guide column (115), the sealing buoyancy plate (114) is located below the water outlet pipe (301), the center of the top of the sealing buoyancy plate (114) is fixedly connected with a pressure spring (117), the other end of the pressure spring (117) is fixedly connected to the sliding rod (110), and the pressure spring (117) is not in contact with the telescopic rod (112).
2. The intelligent variable-frequency constant-pressure water supply equipment as claimed in claim 1, wherein: first control valve (8) are installed in aqueduct a (5) and frequency conversion water tank (2) junction, second control valve (9) are installed in aqueduct b (7) and frequency conversion water tank (2) junction, install valve accuse ware (12) on frequency conversion water tank (2), and valve accuse ware (12), first control valve (8) and second control valve (9) electric connection.
3. The intelligent variable-frequency constant-pressure water supply equipment as claimed in claim 1, wherein: install master controller (13) on constant pressure water tank (3), and master controller (13) include water pressure detector and display screen.
4. The intelligent variable-frequency constant-pressure water supply equipment as claimed in claim 1, wherein: and a water pressure control tool (14) is detachably mounted at the joint of the communicating pipe (10) and the pressure water supply tank (1).
5. The intelligent variable-frequency constant-pressure water supply equipment as claimed in claim 4, wherein: threaded joint (15) have been inlayed in hydraulic control utensil (14), and threaded joint (15) and communicating pipe (10) screw thread link to each other, holding ring (16) are installed to the inner wall of threaded joint (15), one side fixedly connected with reset spring (17) of pressure feed water tank (1) are kept away from in holding ring (16), and the other end fixedly connected with of reset spring (17) seals chock plug (18), sealed sliding mounting is in threaded joint (15) in chock plug (18).
6. The intelligent variable-frequency constant-pressure water supply equipment as claimed in claim 5, wherein: the diameter of the threaded joint (15) is smaller than that of the communicating pipe (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110504846.9A CN113279453B (en) | 2021-05-10 | 2021-05-10 | Intelligent variable-frequency constant-pressure water supply equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110504846.9A CN113279453B (en) | 2021-05-10 | 2021-05-10 | Intelligent variable-frequency constant-pressure water supply equipment |
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| CN113279453A CN113279453A (en) | 2021-08-20 |
| CN113279453B true CN113279453B (en) | 2022-09-06 |
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| CN114045906B (en) * | 2021-10-09 | 2023-10-20 | 皖西学院 | Telescopic water tank device of portable shower system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB244469A (en) * | 1924-12-15 | 1926-04-22 | Johan Gunnar Everstam | Improvements in adjustable self-closing valve |
| KR20010083841A (en) * | 2001-07-04 | 2001-09-03 | 이정훈 | Frost proof faucet |
| CN202689103U (en) * | 2012-07-16 | 2013-01-23 | 苏州第壹制药有限公司 | Constant pressure circulation water pipeline system |
| CN205918500U (en) * | 2016-07-08 | 2017-02-01 | 上海卓易科技股份有限公司 | Automatic constant pressure water tank lid |
| CN208088429U (en) * | 2018-04-16 | 2018-11-13 | 天津市管道工程集团有限公司 | A kind of accumulation of energy water storage system of auxiliary pressure supply |
| CN209397659U (en) * | 2018-12-17 | 2019-09-17 | 四川通力达医疗水处理设备有限公司 | Recycle constant pressure water supply system |
| CN210459393U (en) * | 2019-07-16 | 2020-05-05 | 江西三川科技有限公司 | Non-negative pressure variable frequency constant pressure water supply equipment |
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Granted publication date: 20220906 |